Simulate visibilities

vis-simulate effectively turns a sky-model source list into visibilities.

Simple example

hyperdrive vis-simulate \
    -s srclist.yaml \
    -m *.metafits

Considerations

Disabling beam attenuation

--no-beam

Dead dipoles

By default, dead dipoles in the metafits are used. These will affect the generated visibilities. You can disable them with --unity-dipole-gains.

Vetoing

Source-list vetoing can do unexpected things. You can effectively disable it by supplying --veto-threshold 0, although the veto routine will still:

  1. Remove sources below the horizon; and
  2. Sort the remaining sources by brightness based off of the centre frequencies MWA coarse channels.